12c508/p And 12c607/p Modchip Replacement For Sony Ps1 Playstation 1 Ksm-440bam Ksm-440aem Ksm-440adm - Accessories - AliExpress
Making a PlayStation 1 modchip from SCRATCH - YouTube
Any ideas on what this mod chip is or does : r/psx
Dumping Blog: PS-IO Switchboard for PS1 (incl. Modchip)
Burning Your Own PS1 Modchip Is Easy | Hackaday
PU-8 MM3 modchip installation diagram - William Quade
Now Working** Ps1 Modchips not working. Using pic12f629 - Hardware - AtariAge Forums
Playstation One - PS1 - Mod chip installation that went wrong - YouTube
PSX - Removing Mod Chip | GBAtemp.net - The Independent Video Game Community
Is this a mod chip??? : r/psx
Darthsternie on Twitter: "Anybody who knows anything about PS1 Modchips able to help me tell what this modchip could be? I can't these solder points anywhere online. It's a PSOne with 12c508A
Help with a modchip issue on a fat PS1 (Explanation in comments) : r/psx